“It’s a daily struggle for them to get along right now,” a source tells OK!. “He is under a lot of pressure at work and he brings it home with him."

“They usually make up pretty quickly, but the constant bickering is really wearing on Jeremy. He’s been complaining to his friends about it so much that everyone is wondering if he’s going to break up with Leah permanently.”

And an insider tells OK! that Leah, 19, also wants to focus on her daughters, leaving Jeremy, 22, out of the picture.

Then there’s the jealousy — a problem for both of them. Leah is very suspicious of Jeremy, even though she’s never caught him doing anything. And Jeremy thinks Leah’s missing her former husband Corey Simms a little too much.

“Her paranoia really stresses Jeremy out and it’s pushing him away,” reveals the source. “She needs to loosen up the reins a little, but the problems aren’t all Leah’s fault. Jeremy is a typical guy and he can be really insensitive sometimes.”

Still, everyone is hoping that they’ll stop the fighting and work things out. Says the source: “At the end of the day, they make a really great couple.”

TO READ MORE ABOUT LEAH & JEREMY'S TROUBLED RELATIONSHIP, PICK UP THE NEW ISSUE OF OK! — ON NEWSTANDS NOW!